Computing blocking probabilities in survivable elastic optical OFDM networks

Abstract

We present an approximate analytical method to compute the performance measurements in optical orthogonal frequency-division multiplexing (OFDM) networks with survivability. Our approach divides the network into layers and the equivalent path technique is used to model each path as an equivalent single link system. The analysis of the performance measurements for an equivalent single link system isis based on a superposition concept using the Kaufman/Delbrouck recursion model. We assume static routing with a first-fit spectrum allocation. Simulation results that indicate the accuracy of our method are presented.